Rec. 709, also known as Rec.709, BT.709, and ITU 709, is a standard developed by ITU-R for image encoding and signal characteristics of high-definition television.
A 715 Health Check is an overall assessment completed by a nurse or Aboriginal Health Worker then reviewed by the general practitioner.
It's an Australian Government initiative, part of Closing the Gap, designed to reduce the health differences between indigenous people and the wider population.